/*css 初始化代码 css reset*/
/*清除元素默认的内外边距*/
* {
    margin: 0;
    padding: 0;
}

/*清除列表样式*/
li {
    list-style: none;
}

/*去掉button 默认自带的边框*/
button {
    border: none;
}

body {
    background-color: #f3f5f7;
    /*方便写代码 一会别忘了删除*/
    /* height: 3000px; */
}

a {
    text-decoration: none;
}

/*清除浮动的*/
.clearfix:before,
.clearfix:after {
    content: "";
    display: table;
}

.clearfix:after {
    clear: both;
}

.clearfix {
    *zoom: 1;
}

/*版心 1200 水平居中*/
.w {
    width: 1200px;
    margin: auto;
}

/*header start*/
.header {
    height: 42px;
    /* background-color: pink; */
    margin: 30px auto;
}

.logo {
    float: left;
    margin-right: 60px;
}

.nav {
    float: left;
}

.nav ul li {
    float: left;
}

.nav ul li a {
    display: block;
    height: 40px;
    padding: 0 10px;
    margin-right: 20px;
    line-height: 40px;
    font-size: 18px;
    color: #050505;
    text-decoration: none;
}

/*鼠标经过链接 才有底边框*/
.nav ul li a:hover {
    border-bottom: 2px solid #00a4ff;
}

.search {
    float: left;
    margin-left: 70px;
}

.search input {
    float: left;
    width: 340px;
    height: 40px;
    border: 1px solid #00a4ff;
    border-right: 0;
    padding-left: 20px;
    color: #ccc;
}

.search button {
    float: left;
    width: 50px;
    height: 42px;
    background: url(images/btn.png);
}

.user {
    float: left;
    height: 42px;
    line-height: 42px;
    margin-left: 30px;
    font-size: 14px;
    color: #666;
}

/*banner start*/
.banner {
    height: 420px;
    background: #1c036c url(images/banner2.jpg) no-repeat top center;
}

.subnav {
    float: left;
    width: 150px;
    height: 420px;
    padding: 0 20px;
    /*背景半透明*/
    background: rgba(0, 0, 0, .3);
}

.subnav li {
    height: 45px;
    line-height: 45px;
}

.subnav li a {
    color: #fff;
    font-size: 14px;
    text-decoration: none;
}

.subnav li a:hover {
    color: #00b4ff;
}

.subnav span {
    float: right;
}

.course {
    /*因为course 子盒子有了浮动，则就不会外边距塌陷的问题了*/
    float: right;
    width: 228px;
    height: 300px;
    background-color: #fff;
    margin-top: 50px;
}

.course-hd {
    height: 48px;
    background-color: #9bceea;
    font-size: 18px;
    text-align: center;
    line-height: 48px;
    color: #fff;
    /*文字加粗*/
    /*font-weight: bold;*/
    font-weight: 700;
}

.course-bd {
    /*没有宽度的盒子 padding 不会撑开盒子*/
    padding: 0 15px;
}

.course-bd ul {
    /*外边距塌陷的问题
	margin-top: 10px;*/
    padding-top: 10px;
}

.course-bd li {
    /*行高等与高度 只能让单行文本垂直居中*/
    height: 50px;
    border-bottom: 1px solid #ccc;
    margin-top: 10px;
}

.course-bd li h4 {
    font-size: 14px;
    color: #4e4e4e;
}

.course-bd li p {
    font-size: 12px;
    color: #a5a5a5;
}

.all {
    display: block;
    height: 38px;
    border: 1px solid #00a4ff;
    margin-top: 10px;
    font-size: 16px;
    color: #00a4ff;
    text-align: center;
    line-height: 38px;
}

.all:hover {
    background-color: #00a4ff;
    color: #fff;
}

/*banner end*/
/*goods start*/
.goods {
    height: 60px;
    background-color: #fff;
    margin-top: 10px;
    /*利用行高可以继承的特性*/
    line-height: 60px;
    box-shadow: 2px 2px 2px rgba(0, 0, 0, .2);
}

.goods h3 {
    float: left;
    margin: 0 30px;
    font-size: 16px;
    color: #00a4ff;

}

.goods-item {
    float: left;
    color: #bfbfbf;
}

.goods-item a {
    font-size: 16px;
    color: #050505;
    margin: 0 30px;
}

.mod {
    float: right;
    margin-right: 30px;
    font-size: 14px;
    color: #00a4ff;
}

/*goods end*/
/*box start*/
.box {
    margin-top: 15px;
}

.box-hd {
    height: 60px;
    line-height: 60px;
    /*background-color: pink;*/
}

.box-hd h3 {
    float: left;
    font-size: 20px;
    color: #494949;
    /*让粗体不加粗 400 == normal*/
    font-weight: 400;
}

.box-hd a {
    float: right;
    margin-right: 30px;
    font-size: 12px;
    color: #a5a5a5;

}

.box-bd {
    /*这个盒子一定不要给高度 因为我们可能放一行 也可能是2行 或者n行*/
    /*宽度呢？ 呵呵*/
    /*box-bd 宽度 超过了 版心 1200 是可以的，就就解决了问题*/
    width: 1215px;
}

.box-bd li {
    position: relative;
    float: left;
    width: 228px;
    height: 270px;
    margin-right: 15px;
    margin-bottom: 15px;
    background-color: #fff;
    box-shadow: 2px 2px 2px rgba(0, 0, 0, .3);
}

.box-bd li img {
    width: 100%;
}
.box-bd .hot {
	position: absolute;
	top: 0;
	right: -4px;
	width: 40px;
}

.box-bd li h4 {
    margin: 20px;
    font-size: 14px;
    color: #050505;
    font-weight: 400;
}

.box-bd li p {
    margin: 0 20px;
    font-size: 12px;
    color: #999;
}

.box-bd p span {
    color: orange;
}

/*box end */
/*footer*/
.footer {
    height: 220px;
    padding-top: 30px;
    background-color: #fff;
}

.copyright {
    float: left;
}

.copyright p {
    font-size: 12px;
    color: #666;
    margin: 20px 0 15px 0;
}

.app {
    display: block;
    width: 118px;
    height: 34px;
    border: 1px solid #00a4ff;
    text-align: center;
    line-height: 34px;
    font-size: 16px;
    color: #00a4ff;
}

.links {
    float: right;
}

.links dl {
    float: left;
    margin-left: 100px;
}

.links dt {
    height: 35px;
    font-size: 16px;
    color: #333;
}

.links dd a {
    font-size: 12px;
    color: #333;
}

.links dd a:hover {
    color: #004aff;
}